strickland



(No Model.) 2 Sheets-Sheet 1.

. J. R. STRICKLAND. CIRCULAR SAWING MACHINE.

No. 367,864. Patented Aug. 9,1887.

WITNESSES INVENTOR V Jilmes.12.$2rjc/rland, By his flttorneys (NoModel.)

' J. R. STRICKLAND.

CIRCULAR SAWING MACHINE.

2 sheetssheet 2.

No. 367,864. Patented Aug. 9-, 1887.-

E] g g D DI D u u d u u WITNESSES INVENTOR UNITED STATES PATENT OFFICE.

JAMES STRICKL AND, OF WVILMINGTON, NORTH CAROLINA, ASSIGNOR OF ONE-HALFTO S. 85 W. H. NORTHROP, OF SAME PLACE.

CIRCULAR SAWING MACHINE.

. SPECIFICATION forming part of Letters Patent No. 367,864, dated August9, 1887.

Application filed March 31, 1887.

To aZZ whom it may concern.-

Be it known that I, JAMES R. STRIOKLAND, of Wilmington, in the county ofNew Hanover and State of North Carolina,have invented a certain new anduseful Improvement in Circular Sawing Machines, of which the followingis a specification, reference being had to the accompanying drawings, inwhich- Figure 1 is a top or plan view. Fig. 2 is a IO side elevation,partly in section; and Fig. "3, a

front view of the swinging gear. V

The object of my invention is to provide an improved portable saw-benchin which the saw-arbor, with one or more circular saws mounted upon it,has its bearings in a sliding reciprocating frame. I provide for drivingthe saw-arbor by means'of belt-gearing upon a pivoted support connectedfirmly with the sliding sawframe, so that in whatever position the framemay be the belt will always be taut and operate the same as if it werean ordinary belt running over but two pulleys with fixed relations toeach other. 7

In the drawings, Adcsiguates a main frame of any suitable form. I

B designates a saw-arbor, which may contain a single saw or a gang organgs of saws. These saws are circular, and are adjustablelongitudinally upon the arbor by any ordi- 5o nary mcans-such, forexample, as illustrated.

The sawarbor is mounted in ordinary bearings, 0, upon a slidingreciprocating frame, D, supported upon tracks or ways E.

F indicates supporting-bars for the timber or lumber to be sawed.

G is the belt-pulley upon the saw-arbor.

H is a link pivoted to the under side of the saw-frame, and also pivotedto an arm, I, of the lever K, which is pivoted at L, and serves 13 toreciprocate the saw-frame and saws.

, M indicates a rod pivoted to the saw-frame at one end and to the arm Nat the other end.

0 is a belt-pulley, with its shaft journaled upon a stationary part ofthe main frame.

ings upon the arm N, which latter is pivoted to the shaft of the pulleyO. The belt ex- P and Q are guide-pulleys secured in bear- Seria No.233,212. (No model.)

tends around these pulleys, as illustrated, so as to drive thesaw-shaft. The arm N is pivoted so that its free end will oscillate onthe 5o shaft of the pulley O as a pivot to follow the slidingreciprocating movements of the sawframe. By this means the weight of thebeam and pulleys is supported upon the pivotal point of the arm, and butlittle force is required to move the arm with the sliding frame. Inwhatever position the sliding frame may be, it will be seen that thebelt will always remain taut.

It will be practicable, by means of the nut It upon the bolt S, toregulate the tension of the belt as may be desired; but the tension willnot be disturbed by the operation of the machine or the movement of theparts, and the belt will not require tightening ordinarily 6 after oncebeing fitted.

I am aware that portable sawbenches have been made before with slidingframes; but my construction is simple and easy of operation and does notrequire the employment of any 0 tension device operating upon the plateto compensate for the movement of the parts While the machine is inoperation.

What I claim to be new, and desire to secure by Letters Patent of theUnited States, is-

In a portable saw-bench, the combination, with a main frame,-A,'and asliding frame, D, mounted thereon, and carrying a saw-arbor. B, and acircular saw, of the link H, pivoted Y to the sliding frame and to thearm I, which is provided with the operating hand-lever K, the rod M,pivoted to the sliding 'frame and to the arm N, which carries theguide-pulleys P and Q and is pivoted on the shaft of the pulley O, andthe main belt-pulleys O and G, all constructed and arrangedsubstantially as set forth. I

In testimony whereof I have hereunto subscribed my name.

' JAMES R. STRIOKLAND.

"Witnesses:

W. M. HUNT, B. B. BRYAN.

